What does the compiler do in a computer?

compiler, computer software that translates (compiles) source code written in a high-level language (e.g., C++) into a set of machine-language instructions that can be understood by a digital computer’s CPU.

What does a compiler do in Java?

Software that converts a Java source program into bytecode (intermediate language) or to a just-in-time (JIT) compiler that converts bytecode into machine language. It may also refer to compiling the source code into the native language of a particular hardware platform, which makes it hardware dependent.

How does a compiler work with a programming language?

A compiler takes the program code (source code) and converts the source code to a machine language module (called an object file). So, for a compiled language the conversion from source code to machine executable code takes place before the program is run.

Where is compiler program stored?

When we write code, after compilation the code will be converted to machine language and then stored in the hard disk.

What is compiler and interpreter in Java?

As the Java compiler compiles the source code into the Java bytecode. In the same way, the Java interpreter converts or translates the bytecode into the machine-understandable format i.e. machine code, after that the machine code interacts with the operating system.

Why do we need a compiler?

Because computer can’t understand the source code directly. So, the compiler is intermediate between human readable format and machine-readable format. The compiler will parse the source file and translate it into machine understandable object file.

What is compiler explain different phases of compiler?

Summary. Compiler operates in various phases each phase transforms the source program from one representation to another. Six phases of compiler design are 1) Lexical analysis 2) Syntax analysis 3) Semantic analysis 4) Intermediate code generator 5) Code optimizer 6) Code Generator.

What is a compiler and how does it work?

Updated July 03, 2019. A compiler is a program that translates human-readable source code into computer-executable machine code. To do this successfully, the human-readable code must comply with the syntax rules of whichever programming language it is written in. The compiler is only a program and cannot fix your code for you.

How many times can a compiler read the source code?

Some programming languages are written so a compiler can read the source code only once and generate the machine code. Pascal is one such language. Many compilers require at least two passes. Sometimes, it is because of forward declarations of functions or classes.

How do compilers generate machine code?

Compilers typically generate machine code into object files that are then linked together by a linker program.

What is cross-compiler and source-to-source compiler?

A compiler that runs on platform (A) and is capable of generating executable code for platform (B) is called a cross-compiler. A compiler that takes the source code of one programming language and translates it into the source code of another programming language is called a source-to-source compiler.

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